CR Group
The chondrites of the CR group are named for their type specimen
Renazzo, which fell in Italy in 1824. There are only about 15 CR
chondrites known, with Renazzo initially classified as a "type
II" CM2 chondrite. However, the CR chondrites are very different from
the CM group, although they also mostly belong to petrologic type 2. Like
the CM chondrites, they contain hydrosilicates, traces of water, and
magnetite. The main difference is that they contain reduced metal in the
form of nickel-iron and iron sulfide of up to 10%. This metal is found in
the black matrix as well as in the large and clearly visible chondrules
that make up about 50% of the meteorites. Sometimes the orange-coloured
chondrules are "armored"; i.e. imbedded into small rims of
nickel-iron or iron sulfide. All this is typical for the chondrites of the
CR group, and it's quite easy to distinguish them from members of other
carbonaceous chondrite groups.
NWA 1180
March 2000, Morocco
TKW 1705 gr
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NWA1180 -00
Big end cut with crust, has black inclusions
50.48gr
Price
on request |
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NWA1180 -01
very nice end cut with a large band of crust on the
back, has a giant chondrule, a nice specimen
24.10gr
Sold
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NWA1180 -02
slice with crust
7.03gr
SOLD |
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NWA1180 -03
nice slice cut in the nose cone of the main mass,
superb !!!
9.99gr
SOLD
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